Home / 7,861.77-10,851.91-4,879.35

Finding the Fourth Proportional to 7,861.77, 10,851.91 and 4,879.35

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Solution

The fourth proportional to 7,861.77, 10,851.91 and 4,879.35 is: 6,735.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,861.77 : 10,851.91 = 4,879.35 : x
  2. Step 2: Convert to fraction form
    7,861.77/10,851.91 = 4,879.35/x
  3. Step 3: Cross multiply
    7,861.77x = 10,851.91 × 4,879.35
  4. Step 4: Simplify right side
    7,861.77x = 52,950,254.86
  5. Step 5: Solve for x
    x = 52,950,254.86/7,861.77
  6. Step 6: Final answer
    x = 6,735.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.